Improvement in doubling and twisting machines



2 Sheets-Sheet 1 T. KERSHAW. Doubling and Twisting Machine.

No. 211,745. Patented Jan. 28,1879.

ed 1 all!" llll H I WIYTNESSES: JNVEN'TOR v ATTORNEY.

FNOYO-UIMOGRAPMER. WASHINGTON D C 2 Sheets-Sheet 2.

T. KE RSHAW. Doubling and Twisting Machine.

No. 211,745., Patented Jan. 28,1879.

JITNESSESr- A44 IINVENTOR v v ATTORNEKS,

N-PETERS; PMDTO LITNOGRAFKEI?l WASHINGTON. 04C

IHNITED STATES PATENT FFIGE.

THOMAS KERSHAYV, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN DOUBLING AND TWISTING MACHINES.

Specification forming part of Letters Patent No. 211,745, dated January28, 1879; application filed July 12, 1878.

To all whom it may concern:

Be it known that I, THOMAS KERSHAW, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented certain newanduseful Improvements in Doubling and Twisting Machines; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use it, reference being .had to the accompanyingdrawings, which form part of this specification, in which Figure 1 is aside elevation, partly in section; and Fig. 2 is an isometrical view ofmy improvements.

My invention has relation to means for lifting the drawing-roll frameand stopping the twisting-spindle of a doubling and twisting frame,commonly known as a twisting-machine, whena strand of yarn breaks or abobbin gives out and my improvements consist in the peculiarconstruction, combination, and arrangement of parts, as hereinafterfully set forth.

Referring to the accompanying drawings, which represent a twisting-framewith my improvements applied, A is the creel; B B, the top drawing-roll;O, the lower drawing-roll, and D D the whirl for driving the spindle d.E is a frame, composed of two short parallel end bars, 6 e, which havebearings at c e on the main frame F of the machine, and two cross-bars,e 6 connecting said parallel bars 6 e. A shaft or drum, M, hereinaftermore fully described, is journaled in the parallel bars 6 6, while thecrossbar 6 has sockets or bearings e for the trunnions of thedrawingroll frames G; and the cross-bar c has similar sockets orbearings e for the latch-frame,

hereinafter described.

G is the drawing-roll frame, having trunnions g g resting in the openbearings e on the cross-bar 6 and having a rearwardly-extending arm, 9whose free end impinges against the latch-frame H. H is a supplementaryframe, which I denominate the latch-frame. There is one such latch-framefor each top roll, B. Said latch-frame consists of two side standards, hh, with a cross bar or shaft, M, and provided, if desired, with ahandle, k Said frames H H either have bearings on the cross-bar 0 inwhich case they may be provided with trunnions h h, which rest insockets or boxes 0", or else are swung on a rod, f, in either casehaving freedom of pivotal or swinging motion at their upper end towardthe top roll, 13, their lower ends turning as on a center on thetrunnions 71/3 or rods f.

I is a wire or rod connected to the free end of the arm g by anysuitable means, as by attachment to a button, 9 on said arm, the lowerend of said wire or red being secured to the end of a lever, K, which isfulcrumed at k in a clamp, K, secured to the top rail A through whichthe spindles d pass. I is a spring for drawing down the rear end of thelever K, and k is a shoe on the opposite end of said lever, arranged soas to come in contact with the under side of the whirl D whenever saidlever is drawn down by said spring I. k is a shoe attached to the underside of the clamp K, so that when the lever K is drawn down by thespring I the whirl D will be firmly griped both on its upper and lowersurfaces by the shoes 70 W. The drawing down of said lever K willproduce a corresponding depression of the arm 1 and thereby an elevationof the forward part of the drawing-roll frame G. The circumstances underwhich the whirl and its spindle will thus be stopped, and the topdrawing-roll lifted simultaneously, will be presently described.

L L are trip-wires hung on the cross bar or red It, so that when theyarns (shown at w) are, in a state of tension, passing through the eyesI of said trip-wires, the latter will be elevated, as shown at m inFig.1; and when the yarns are not in a state of tension said trip-wireswill be pendent or hanging downward, as shown at x in Figs. 1 and 2.

M is a shaft or drum having bearings in the frame E, between thelatch-frame Hand the rest or fulcrum of the drawing-roll frame G. Saidroller has a shoulder, m, formed by a groove or rib, and is caused torevolve by suitable mechanism in the direction of the arrow J. a

71/ is a spring secured in any suitable manner to the latch-frame H, andoperating to push the said frame forward when the opposition of the armis removed.

The operation is substantially as follows:

The yarns from the bobbins a a are passed through the eyes Z of thetrip-wires L, thence through the guide-eye G on the drawing'roll frameG, between the drawing-rolls B and O, to the twisting-spindles old. Thetop drawin roll, B, being in contact with the lower roll, 0, the arm 9"resting on the shoulder h of the latch-frame H, and the rear end of thele ver K held up by the connection I, so that the shoe k on said leveris depressed out of contact with the whirl D, the parts are in positionto move. to the rolls and twisting-spindles, the yarns 00 are brought toa state of tension, the tripwires L being thereby elevated and retainedin the position shown at a." in Fig. 1. This position they retain solong as the yarns continue unbroken, and none of the creel-bobbins runout. Should a strand of yarn break, or its bobbin run out, the trip-wireL, through which said yarn passed, will instantly drop, and its free endZ come in contact with the shoulder m of the shaft or drum M. Endthrustwill thereby be produced on such fallen trip-wire, causing thelatch-frame H to be pushed back until the end of the lever clears theshoulder 71/4 on said latch-frame H. The levers and K are then instantlydrawn down by the force of the spring I, thereby elevatin g the topdrawin g-roll, B, out of contact with the lower roll, 0, and bringingthe shoe 70 into contact with. the lower side of the whirl D, and theupper side of said whirl against the shoe k 011 the clamp K, causing analmost instant stoppage of the said whirl and of the spindle on whichsaid whirl is secured.

WVhen the broken strand is repaired, or the run-out bobbin replenishedor displaced for a full one, the parts are restored to their normaloperating position by bearing downward on the handle G of thedrawing-roll frame G until the rear end of the arm 9 rises above theshoulder 70* of the latch'frame H, and is made to rest thereon.

To facilitate the drawing back of the latchframe H, when it is desiredto lift the fallen trip-wire, the handle 7L2, secured to saidlatchframe, maybe used.

If it be not desired to use some of the tripwires of any particular toproll, said wires may be thrown back, as shown at 00 in Fig. 2.

To keep the whirl Din motion, so as to avoid the friction of its belt ona stationary part, the arm is kept elevated, so as to impinge againstthe latch-frame H and above the shoulder of said frame when saidtrip-wires are idle and in position. (Shown at m in Fig. 2.)

Should it at any time be desired to stop the drawing of any top roll, B,the threads or the yarns leading to said roll may be broken by theoperator, and the trip-wires L thrown back into the position representedat 00 in Fig. 2, where they are out of the way, the spindle D being leftrevolving.

The frame E, as already remarked, is fulcrumed in the main frame at e a.It is provided with adjusting-screws f f, whereby it Motion beingcommunicated may be elevated and lowered, as required, thereby raisingor depressing the arm g to its proper position with relation to the stoph on the latch-frame H.

It will be observed that, though the drawing-roll frame G andlatch-frame H are both sustained on the same frame E, an adj ustment ofsaid frame E will change or modify the relative positions of the framesG and H,

7 because such adjustment will move the frame H vertically, while the,frame G, being prevented from descending at its forward end by the lowerdrawing-roll, will maintain its horizontality and position.

I have shown and described the lever K as acting against the whirl D tostop the spindle but, if desired, said lever may act directly againstthe spindle itself without the intervention of the whirl, which I regardand include as within the spirit of my invention.

What I claim as my invention is-- 1. The frame E, composed of theparallel bars 0 c and the cross-bars e 0 having bearings e 0 incombination with the drawingroll frame G and latch-frame H, as shown.

2. The pivoted or rocking drawin g-roll frame G, having rearwardextensions 9 in combination with the frame E, supporting said drawing-roll frame, and the latch-frame H, substantially as shown anddescribed.

3. In combination with the supplementary frame E, the uprightlatch-frame H, having a pivotal or swivel bearing thereon, andthe-tripwires L, sustained upon the cross-bar h of said latch-frame H,substantially as described.

4. The combination of the rocking drawingroll frame G, havingrearwardly-extending arm 9, with swinging latch-frame H, having shoulderor stop h, upon which said arm directly impinges, and spring h",substantiallyas shown. and described.

5. The combination of the whirl D with 1ever K and clamp K, having shoes70 k, re spectively, substantially as shown and described.

6. The combination of the roekin g drawingroll frame G, connection I,elbow brake-lever K, spring I, and whirl D, said lever being constructedsubstantially as described, so as to impinge against the whirl whendrawn down by the spring,-as set forth.

7. The combination of the rocking drawing- -roll frame G, havingrearwardly-extending arm swinging latch-frame H, against which said armdirectly impinges, pivoted lever K,

and connection I, substantially as shown and described.

8. The combination of drum M, having shoulder m, with pivoted uprightlatch-frame H, sustaining pendent trip-wires L L and pivoteddrawing-roll frame G, the parts being relatively arranged as described,whereby when one of said trip-wires falls its outer end will come incontact with shoulder m, causing latchframe H to be pushed back anddrawing-roll frame G to be released from engagement therewith, as setforth.

9. The combination of the rocking drawingroll frame G, latch-frame H,trip-wires L, lever K, connection 1, spring I, and shaft M, havingshoulder m, the several parts being arranged and operating, asdescribed, to move said frame G and leverK, so as to lift thedrawing-roll and stop the spindles, substantially as shown anddescribed.

10. The combination of fulcrnmcd frame E with the adjusting-screws f f,frame I, and

supporting-frame of the machine, substantially as shown and described.

In testimony that I claim the foregoing l have hereunto set my hand this9th day of July, 1878.

THOMAS KERSHAW.

Witnesses M. D. CONNOLLY, (JnAs. F. VAN HORN.

